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Fix string conversions functions to throw out_of_range properly. Fixes http://llvm.org/bugs/show_bug.cgi?id=14919.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@172447 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant 2013-01-14 18:59:43 +00:00
parent b4ebb0e415
commit 3e3ae9ec41
3 changed files with 80 additions and 62 deletions
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124
src/string.cpp
View File

@ -31,17 +31,17 @@ stoi(const string& str, size_t* idx, int base)
{
char* ptr;
const char* const p = str.c_str();
int errno_save = errno;
errno = 0;
long r = strtol(p, &ptr, base);
if (r < numeric_limits<int>::min() || numeric_limits<int>::max() < r)
ptr = const_cast<char*>(p);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stoi: no conversion");
if (errno_save == ERANGE || r < numeric_limits<int>::min() ||
numeric_limits<int>::max() < r)
throw out_of_range("stoi: out of range");
if (ptr == p)
throw invalid_argument("stoi: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return static_cast<int>(r);
@ -52,17 +52,17 @@ stoi(const wstring& str, size_t* idx, int base)
{
wchar_t* ptr;
const wchar_t* const p = str.c_str();
int errno_save = errno;
errno = 0;
long r = wcstol(p, &ptr, base);
if (r < numeric_limits<int>::min() || numeric_limits<int>::max() < r)
ptr = const_cast<wchar_t*>(p);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stoi: no conversion");
if (errno_save == ERANGE || r < numeric_limits<int>::min() ||
numeric_limits<int>::max() < r)
throw out_of_range("stoi: out of range");
if (ptr == p)
throw invalid_argument("stoi: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return static_cast<int>(r);
@ -73,15 +73,16 @@ stol(const string& str, size_t* idx, int base)
{
char* ptr;
const char* const p = str.c_str();
int errno_save = errno;
errno = 0;
long r = strtol(p, &ptr, base);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stol: no conversion");
if (errno_save == ERANGE)
throw out_of_range("stol: out of range");
if (ptr == p)
throw invalid_argument("stol: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return r;
@ -92,15 +93,16 @@ stol(const wstring& str, size_t* idx, int base)
{
wchar_t* ptr;
const wchar_t* const p = str.c_str();
int errno_save = errno;
errno = 0;
long r = wcstol(p, &ptr, base);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stol: no conversion");
if (errno_save == ERANGE)
throw out_of_range("stol: out of range");
if (ptr == p)
throw invalid_argument("stol: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return r;
@ -111,15 +113,16 @@ stoul(const string& str, size_t* idx, int base)
{
char* ptr;
const char* const p = str.c_str();
int errno_save = errno;
errno = 0;
unsigned long r = strtoul(p, &ptr, base);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stoul: no conversion");
if (errno_save == ERANGE)
throw out_of_range("stoul: out of range");
if (ptr == p)
throw invalid_argument("stoul: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return r;
@ -130,15 +133,16 @@ stoul(const wstring& str, size_t* idx, int base)
{
wchar_t* ptr;
const wchar_t* const p = str.c_str();
int errno_save = errno;
errno = 0;
unsigned long r = wcstoul(p, &ptr, base);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stoul: no conversion");
if (errno_save == ERANGE)
throw out_of_range("stoul: out of range");
if (ptr == p)
throw invalid_argument("stoul: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return r;
@ -149,15 +153,16 @@ stoll(const string& str, size_t* idx, int base)
{
char* ptr;
const char* const p = str.c_str();
int errno_save = errno;
errno = 0;
long long r = strtoll(p, &ptr, base);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stoll: no conversion");
if (errno_save == ERANGE)
throw out_of_range("stoll: out of range");
if (ptr == p)
throw invalid_argument("stoll: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return r;
@ -168,15 +173,16 @@ stoll(const wstring& str, size_t* idx, int base)
{
wchar_t* ptr;
const wchar_t* const p = str.c_str();
int errno_save = errno;
errno = 0;
long long r = wcstoll(p, &ptr, base);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stoll: no conversion");
if (errno_save == ERANGE)
throw out_of_range("stoll: out of range");
if (ptr == p)
throw invalid_argument("stoll: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return r;
@ -187,15 +193,16 @@ stoull(const string& str, size_t* idx, int base)
{
char* ptr;
const char* const p = str.c_str();
int errno_save = errno;
errno = 0;
unsigned long long r = strtoull(p, &ptr, base);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stoull: no conversion");
if (errno_save == ERANGE)
throw out_of_range("stoull: out of range");
if (ptr == p)
throw invalid_argument("stoull: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return r;
@ -206,15 +213,16 @@ stoull(const wstring& str, size_t* idx, int base)
{
wchar_t* ptr;
const wchar_t* const p = str.c_str();
int errno_save = errno;
errno = 0;
unsigned long long r = wcstoull(p, &ptr, base);
if (ptr == p)
{
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (r == 0)
throw invalid_argument("stoull: no conversion");
if (errno_save == ERANGE)
throw out_of_range("stoull: out of range");
if (ptr == p)
throw invalid_argument("stoull: no conversion");
#endif // _LIBCPP_NO_EXCEPTIONS
}
if (idx)
*idx = static_cast<size_t>(ptr - p);
return r;
@ -227,7 +235,7 @@ stof(const string& str, size_t* idx)
const char* const p = str.c_str();
int errno_save = errno;
errno = 0;
double r = strtod(p, &ptr);
float r = strtof(p, &ptr);
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (errno_save == ERANGE)
@ -237,7 +245,7 @@ stof(const string& str, size_t* idx)
#endif // _LIBCPP_NO_EXCEPTIONS
if (idx)
*idx = static_cast<size_t>(ptr - p);
return static_cast<float>(r);
return r;
}
float
@ -247,7 +255,7 @@ stof(const wstring& str, size_t* idx)
const wchar_t* const p = str.c_str();
int errno_save = errno;
errno = 0;
double r = wcstod(p, &ptr);
float r = wcstof(p, &ptr);
swap(errno, errno_save);
#ifndef _LIBCPP_NO_EXCEPTIONS
if (errno_save == ERANGE)
@ -257,7 +265,7 @@ stof(const wstring& str, size_t* idx)
#endif // _LIBCPP_NO_EXCEPTIONS
if (idx)
*idx = static_cast<size_t>(ptr - p);
return static_cast<float>(r);
return r;
}
double

9
test/strings/string.conversions/stof.pass.cpp
View File

@ -32,23 +32,24 @@ int main()
idx = 0;
assert(std::stof(L"10g", &idx) == 10);
assert(idx == 2);
idx = 0;
try
{
assert(std::stof("1.e60", &idx) == INFINITY);
assert(idx == 5);
assert(false);
}
catch (const std::out_of_range&)
{
assert(false);
assert(idx == 0);
}
try
{
assert(std::stof(L"1.e60", &idx) == INFINITY);
assert(idx == 5);
assert(false);
}
catch (const std::out_of_range&)
{
assert(false);
assert(idx == 0);
}
idx = 0;
try

9
test/strings/string.conversions/stoll.pass.cpp
View File

@ -86,4 +86,13 @@ int main()
{
assert(idx == 0);
}
try
{
std::stoll("99999999999999999999999999", &idx);
assert(false);
}
catch (const std::out_of_range&)
{
assert(idx == 0);
}
}